RDL STD-600 Passive Audio Divider-Combiner, 600 Ohm

Optimize audio routing without adding power or complexity with the Radio Design Labs STD-600 passive audio divider-combiner. Built as a resistive branching network with RF filtering on each of four channels, the STD-600 delivers reliable, noise-resistant performance for pro audio, security, surveillance and monitoring applications. Its balanced 600 Ω inputs and outputs preserve signal integrity when combining stereo to mono, splitting a mono feed to multiple inputs, or safely summing multiple microphones into a single amplifier input.

Because any channel (A–D) may serve as either an input or an output, system designers gain flexible signal routing without extra patching or active electronics. The compact RDL STICK-ON form factor mounts near cameras, recorders or amps for tidy installations, while the passive, transformer-free topology minimizes maintenance and eliminates power dependencies. Whether you’re outfitting a control room, IP surveillance audio path, or a broadcast monitoring chain, the STD-600 simplifies integration and protects audio clarity.

Choose the Radio Design Labs STD-600 when you need robust, low-impedance (600 Ω) balanced splitting/combining with RF suppression. Add it to your security or pro-audio toolkit for cleaner mixes and simpler deployments.

• Passive, no-power solution for combining or splitting balanced audio lines, reducing rack complexity and points of failure
• 600 Ω balanced inputs/outputs with RF filtering to preserve signal integrity in security and surveillance monitoring environments
• Four-port resistive branching network allows any channel (A–D) to act as input or output for flexible stereo/mono routing
• Compact RDL STICK-ON form factor for discreet installation near cameras, amps, or mix locations
• Durable, transformer-free design ideal for combining multiple microphones or feeding a mono amplifier from stereo sources